I never tried their grapefruit, but my last IPA was a Summit Amarillo Citra, and to add "a little something extra" I used 1/2 ounce of Experimental Lemon hops from Yakima Hops as FWH, another 1/2 ounce at 1 minute, and one ounce in a corny keg along with an ounce of Summit as the dryhops. The beer is delicious.